Commit Graph

6619 Commits

Author SHA1 Message Date
Daniel Stenberg
3eb57d6ba7
docs: use lowercase curl and libcurl
Adjusted badwords to find them.

Plus: make badwords run on all markdown files in the repo and update
markdowns previously unchecked

Closes #15898
2025-01-02 17:15:54 +01:00
Daniel Stenberg
e694c8284a
docs/libcurl/opts: clarify the return values
Expand a little.

- mention the type name of the return code
- avoid stating which exact return codes that might be returned, as that
  varies over time, builds and conditions
- avoid stating some always return OK
- refer to the manpage documenting all the return codes

Closes #15900
2025-01-02 17:13:33 +01:00
Daniel Stenberg
e256d9df6d
docs/cmdline-opts/_ENVIRONMENT.md: minor language fix
Closes #15897
2025-01-02 17:02:26 +01:00
Daniel Stenberg
4501b7e28d
docs/libcurl: return value overhall
Unified, extended, clarified the return values for numerous functions

Closes #15899
2025-01-02 16:58:05 +01:00
Viktor Szakats
27b9e76706
cmake: make system libraries dl, m, pthread customizable
via `DL_LIBRARY`, `MATH_LIBRARY`, `PTHREAD_LIBRARY` variables.

They are used in Rustls, wolfSSL Find modules.

Also:
- always use `NAMES` keyword in `find_library()` calls.
- respect `find_library()` results for `dl`, `m`, `pthread`.
- formatting.

Closes #15892
2025-01-02 12:55:50 +01:00
Daniel Stenberg
91587522a1
docs/HTTP-COOKIES.md: link to more information
Closes #15891
2025-01-01 22:45:48 +01:00
Jakub Jelen
999cc818c5
openssl: add support to use keys and certificates from PKCS#11 provider
In OpenSSL < 3.0, the modularity was provided by mechanism called
"engines". This is supported in curl, but the engines got deprecated
with OpenSSL 3.0 in favor of more versatile providers.

This adds a support for OpenSSL Providers, to use PKCS#11 keys, namely
through the pkcs11 provider. This is done using similar approach as the
engines and this is automatically built in when the OpenSSL 3 and newer
is used.

Signed-off-by: Jakub Jelen <jjelen@redhat.com>

Closes #15587
2025-01-01 14:47:31 +01:00
Jay Satiro
6c70ec16c7 http: ignore invalid Retry-After times
- Treat negative Retry-After date-based times as 0.

- Treat Retry-After times greater than 6 hours as 6 hours.

Prior to this change Retry-After did not have a limited range and the
server could have set a time greater than 6 hours or a date in the past
that would result in a negative time, either of which may be unexpected
by the user.

The 6 hour limit is purposely not documented so that it can be changed
in the future if necessary.

Closes https://github.com/curl/curl/pull/15833
2024-12-31 03:19:22 -05:00
Viktor Szakats
1e14e1682c
examples/block-ip: drop redundant memory.h include
Not used elsewhere in the repo.
2024-12-31 00:35:57 +01:00
Daniel Stenberg
c2d37463b9
curl/var: change byte offset syntax for assignments
Follow-up to 40c264db61 after discussions on IRC.

The new style is

  name[0-99]=contents

and

  name[0-99]@filename

A) This does not cause the same problems with old curl versions trying
the new syntax as this way will cause old curls just fail with syntax
error and not risk using the wrong file.

B) Adds the same byte range support for "normal" assigns, which the
previous syntax did not. Thus lets a user get a partial content of a
variable etc.

Added test 790 and 791 to verify non-file assigns with ranges.

Closes #15862
2024-12-30 15:55:54 +01:00
Daniel Stenberg
53fcac438a
TheArtOfHttpScripting.md: rewrite double 'that'
Closes #15863
2024-12-30 14:02:37 +01:00
Stefan Eissing
a2622cdbd5
mbedtls: fix handling of blocked sends
mbedtls is picky when a mbedtls_ssl_write) was previously blocked. It
requires to be called with the same amount of bytes again, or it will
lose bytes, e.g. reporting all was sent but they were not. Remember the
blocked length and use that when set.

Reported-by: Tamás Bálint Misius
Fixes #15801
Closes #15846
2024-12-30 10:20:27 +01:00
Daniel Stenberg
c445b7426a
checksrc: introduce 'banfunc' to ban specific functions
Use 'banfunc' and 'allowfunc' in .checksrc to specify which functions to
ban or allow to be used. This saves us from having to edit the script
going forward when we want to ban or allow specific functions.

This replaces a set of previous rules and all banned functions are now
checked with the BANNEDFUNC rule.

There is a set of default banned functions, shown by invoking
./checksrc.

Also, -a and -b options are added to specify allowed or banned functions
on the command line.

Closes #15835
2024-12-30 08:25:56 +01:00
Daniel Stenberg
66e5351e0a
urlapi: fix redirect to a new fragment or query (only)
The redirect logic was broken when the redirect-to URL was a relative
URL only as a fragment or query (starting with '#' or '?').

Extended test 1560 to reproduce, then verify.

Reported-by: Jeroen Ooms
Fixes #15836
Closes #15848
2024-12-30 08:23:26 +01:00
Christopher Dannemiller
c78044c07e multi: fix curl_multi_waitfds reporting of fd_count
- Make curl_multi_waitfds consistent with the documentation.

Issue Addressed:

 - The documentation of curl_multi_waitfds indicates that users should
   be able to call curl_multi_waitfds with a NULL ufds. However, before
   this change, the function would return CURLM_BAD_FUNCTION_ARGUMENT.
 - Additionally, the documentation suggests that users can use this
   function to determine the number of file descriptors (fds) needed.
   However, the function would stop counting fds if the supplied fds
   were exhausted.

Changes Made:

 - NULL ufds Handling: curl_multi_waitfds can now accept a NULL ufds if
   size is also zero.
 - Counting File Descriptors: If curl_multi_waitfds is passed a NULL
   ufds, or the size of ufds is insufficient, the output parameter
   fd_count will return the number of fds needed. This value may be
   higher than actually needed but never lower.

Testing:

 - Test 2405 has been updated to cover the usage scenarios described
   above.

Fixes https://github.com/curl/curl/issues/15146
Closes https://github.com/curl/curl/pull/15155
2024-12-29 01:05:09 -05:00
Jay Satiro
39e21794a7 cookie: fix crash in netscape cookie parsing
- Parse the input string without modifying it.

Prior to this change a segfault could occur if the input string was
const because the tokenizer modified the input string. For example if
the user set CURLOPT_COOKIELIST to a const string then libcurl would
likely cause a crash when modifying that string. Even if the string was
not const or a crash did not occur there was still the incorrect and
unexpected modification of the user's input string.

This issue was caused by 30da1f59 (precedes 8.11.0) which refactored
some options parsing and eliminated the copy of the input string. Also,
an earlier commit f88cc654 incorrectly cast the input pointer when
passing it to strtok.

Co-authored-by: Daniel Stenberg

Closes https://github.com/curl/curl/pull/15826
2024-12-27 13:16:08 -05:00
Viktor Szakats
fabfa8e402
clang-tidy: add to CI, add cmake support, fix fallouts
build:
- autotools: fix to build generated sources for the `tidy` target.
- autotools: allow passing custom clang-tidy options via
  `CURL_CLANG_TIDYFLAGS` env.
- cmake: add `CURL_CLANG_TIDY` option to configure for `clang-tidy`.
  Also add:
  - `CLANG_TIDY` variable to customize the `clang-tidy` tool.
  - `CURL_CLANG_TIDYFLAGS` to pass custom options to `clang-tidy`.
- apply `--enable-werror` and `-DCURL_WERROR=ON` to `clang-tidy`.

CI/GHA:
- add clang-tidy job for Linux, using autotools and clang-tidy v18.
  This one needs to disable `clang-analyzer-valist.Uninitialized`
  to avoid false positives:
  https://github.com/llvm/llvm-project/issues/40656
  Duration: 5.5 minutes
- add clang-tidy job for macOS, using cmake and clang-tidy v19.
  This one also covers tests and examples, and doesn't hit the false
  positives seen with llvm v18 and earlier.
  Duration: 4.5 minutes
- Linux/macOS: skip installing test dependencies when not building or
  running tests.

fix fallouts reported by `clang-tidy`:
- lib:
  - cf-h2-proxy: unused assignment in non-debug builds.
  - cf-socket: silence warning.
    FIXME: https://github.com/curl/curl/pull/15825#issuecomment-2561867769
  - ftp: NULL passed to `strncmp()`.
  - http2: NULL-ptr deref.
  - mprintf: silence warning.
- src/tool_writeout: NULL passed to `fputs()`.
- examples:
  - invalid file pointers.
  - missing `fclose()`.
- tests:
  - http/clients/hx-download: memory leaks on error.
  - http/clients/hx-download: memory leak on repeat `-r` option.
  - server: double `fclose()`.
    https://www.man7.org/linux/man-pages/man3/fclose.3.html
  - server: invalid file pointer/handle.
  - server/getpart: unused assignments.
  - server/mqttd: leak on failed `realloc()`.
  - server/tftpd: NULL passed to `strcmp()`.

Closes #15825
2024-12-27 13:42:32 +01:00
Viktor Szakats
421e592db2
cmake: add librtmp Find module
The new detection method also allows to enable librtmp without using
OpenSSL as a curl TLS backend at the same time.

Also:
- implement manual version detection for librtmp.
  Version info is in hex. With CMake 3.13 and newer, extract it as a hex
  number. With earlier CMake version, just strip the leading zeroes.
  Doing more here seems overkill because librtmp has been standing
  at 2.3/2.4 for a decade now. Bumping into hex digits seems unlikely
  before deprecating CMake 3.13 support.
  librtmp advertises v2.4 via its `pkg-config` module, and v2.3 via
  its public header. The latter shows up in `curl -V` and either can
  be shown at configure-time depending on detection method.
  This isn't a curl bug.
- GHA/macos: enable rtmp in a job.
- apply the "half-detection" fix to the Find module.
  `librtmp` is also affected (in CI too), because it depends on libssl and
  libcrypto.

Closes #15832
2024-12-27 12:52:23 +01:00
Jay Satiro
5e1700d167 curl_ws_recv.md: fix typo 2024-12-27 00:37:53 -05:00
Viktor Szakats
7a70b46481
tidy-up: misc
- lib1531: fix to use `curl_off_t`.
- src/tool_doswin: merge `_WIN32` guards.
- src/tool_doswin: limit `S_ISCHR()` to MS-DOS.
- src: dedupe `CURL_O_BINARY` macro into `tool_setup.h`.
- CMake/CurlTests.c: cleanup/formatting `HAVE_FILE_OFFSET_BITS` test.
- examples/httpput-postfields: delete unused include.
- spelling: MultiSSL.
- whitespace.

Ref: #15652
Closes #15799
2024-12-24 01:27:26 +01:00
Daniel Stenberg
822971170c
curl_url_set.md: adjust the added-in to 7.62.0
Reported-by: Jeroen Ooms
Fixes #15822
Closes #15823
2024-12-24 00:42:38 +01:00
Daniel Stenberg
9d5ecc9613
getinfo: provide info which auth was used for HTTP and proxy
CURLINFO_HTTPAUTH_USED and CURLINFO_PROXYAUTH_USED

Tested in 590 and 694

Ref: #12668
Idea-by: Ganesh Viswanathan
Closes #15450
2024-12-23 23:03:54 +01:00
Daniel Stenberg
0ebd286aa3
CURLOPT_PROXY.md: clarify the crendential support in proxy URLs
Ref: #15802
Closes #15805
2024-12-23 11:52:42 +01:00
Jay Satiro
a9d881c725 examples/block-ip: show how to block IP addresses
- Show how CURLOPT_OPENSOCKETFUNCTION can be used to block IP addresses.

This is a new example that demonstrates IP blocking.

Ref: https://github.com/curl/curl/discussions/15710#discussioncomment-11534877

Closes https://github.com/curl/curl/pull/15748
2024-12-22 03:11:19 -05:00
Daniel Stenberg
31c6b50cb2
curl: make --etag-save acknowledge --create-dirs
Add test 693 to verify

Fixes #15730
Suggested-by: Tamir Duberstein
Closes #15732
2024-12-21 14:12:16 +01:00
Daniel Stenberg
33ea71ea3a
TODO: sending only part of --data is now possible
Since 40c264db61

Closes #15794
2024-12-21 12:30:39 +01:00
Stefan Eissing
b06b35154f
getinfo: fix CURLINFO_QUEUE_TIME_T and add 'time_queue' var
Let CURLINFO_QUEUE_TIME_T count only the time a transfer spends queued,
including possible redirect requests.

Add var 'time_queue' for reporting the time in write outs.

Add test for verifying correct reporting.

Closes #15512
2024-12-21 12:04:48 +01:00
Daniel Stenberg
40c264db61
curl: add byte range support to --variable reading from file
Allowing --variable read a portion of provided files, makes curl work on
partial files for any options that accepts strings. Like --data and others.

The byte offset is provided within brackets, with a semicolon separator
like: --variable name@file;[100-200]"

Inspired by #14479
Assisted-by: Manuel Einfalt

Test 784 - 789. Documentation update provided.

Closes #15739
2024-12-21 11:46:27 +01:00
Daniel Stenberg
fc3e1cbc50
hyper: drop support
lib : remove all hyper code
configure: stop detecting hyper
docs: no more mention of hyper
tests: mo more special-handling of hyper builds
CI: no jobs using hyper

Closes #15120
2024-12-21 11:33:05 +01:00
Viktor Szakats
46093d9e0e
examples: make them compile with compatibility functions disabled (Windows)
For MinGW this is `-DNO_OLDNAMES`, with MSVC it is
`-D_CRT_DECLARE_NONSTDC_NAMES=0`.

There have been some support for this before this patch.
After this patch this is extended to all examples.

(And also the standalone http/client programs, if here.)

Cherry-picked from #15652
Closes #15789
2024-12-20 17:56:40 +01:00
Viktor Szakats
37fb50a858
examples/complicated: fix warnings, bump deprecated callback, tidy up
Also: make them C89, add consts.

Closes #15785
2024-12-20 17:56:35 +01:00
Stefan Eissing
fa0ccd9f1f
lib: TLS session ticket caching reworked
Described in detail in internal doc TLS-SESSIONS.md

Main points:
- use a new `ssl_peer_key` for cache lookups by connection filters
- recognize differences between TLSv1.3 and other tickets
  * TLSv1.3 tickets are single-use, cache can hold several of them for a peer
  * TLSv1.2 are reused, keep only a single one per peer
- differentiate between ticket BLOB to store (that could be persisted) and object instances
- use put/take/return pattern for cache access
- remember TLS version, ALPN protocol, time received and lifetime of ticket
- auto-expire tickets after their lifetime

Closes #15774
2024-12-20 14:59:23 +01:00
Daniel Stenberg
ed732e3596
examples/synctime.c: remove references to dead URLs and functionality
This example can use the Date: header of any server so there is no point
in linking to ancient URLs describeing a setup at NIST that no longer
exists.

Closes #15786
2024-12-20 13:39:12 +01:00
Daniel Stenberg
cfb97e1fcf
VULN-DISCLOSURE-POLICY.md: mention the not setting CVSS
Closes #15779
2024-12-19 22:59:54 +01:00
dwickr
c5052a0187 CURLOPT_RESOLVE.md: fix wording
(`*`) It's an asterisk, not an ampersand.

Closes https://github.com/curl/curl/pull/15770
2024-12-17 23:14:12 -05:00
Viktor Szakats
f2adb3b6d7
cmake: extend zlib's AUTO option to brotli, zstd and enable if found
- make `curl_dependency_option()` more generic.

- extend `CURL_BROTLI` and `CURL_ZSTD` options to accept
  `AUTO` in addition to existing `ON` and `OFF`.

- change `CURL_BROTLI` and `CURL_ZSTD` option default
  to `AUTO`. Was: `OFF`.
  It brings cmake behavior closer to `./configure`.
  Still different:
  - `./configure` defaults to `off` which means to check default
    locations. cmake checks more locations by default.
    (Also tried `NO_CMAKE_PATH`, but then it checked less locations.)
  - cmake returns both `brotlicommon` and `brotlidec` libs,
    while `./configure` only returns the latter.

- ci: drop explicit cmake options, that are now unnecessary.

- GHA/configure-vs-cmake: make adjustments to make tests pass.

Closes #15431
2024-12-17 04:06:45 +01:00
Viktor Szakats
290607f9d4
Revert: cmake: enable CURL_USE_PKGCONFIG for cross-MINGW
This reverts commit 39c06f7883 #15005.

Combined with most Find modules now supporting `pkg-config`
(39c741b7b0 #15408) this change made
mingw-cross builds fragile by picking up OS-native components. Also
adding `/usr/include` to the header path, confusing feature detection.
2024-12-17 03:21:22 +01:00
Viktor Szakats
a3585c9576
Makefile.mk: drop in favour of autotools and cmake (MS-DOS, AmigaOS3)
`Makefile.mk` supported MS-DOS and Amiga, but `./configure` also
supported them in a better tested and more flexible way.

This patch also adds CMake support for MS-DOS/DJGPP and Amiga OS 3.

`Makefile.mk` was not maintained. Delete it in favour of first-tier
build methods.

Also include some non-MS-DOS/AmigaOS-specific tidy-up, see details at
the end of this message.

Details:

- fix/silence all MS-DOS/DJGPP build warnings and issues.
- add MS-DOS support to cmake.
  - default to `ENABLE_THREADED_RESOLVER=OFF` for MS-DOS.
  - add support for `WATT_ROOT`.
  - use static libcurl with MS-DOS.
  - fixup default CMake suffixes/prefixes for DJGPP.
  - disable hidden symbols for MS-DOS. Not supported on MS-DOS.
  - opt-in MS-DOS into `USE_UNIX_SOCKETS`.
- improve MS-DOS support in autotools.
  - default to `--disable-threaded-resolver` for MS-DOS.
- make sure to use `close_s()` (from Watt-32) with autotools and cmake.
  `Makefile.mk` used it before this patch.
- GHA: add DJGPP cmake (~30s) and autotools (~60s) build jobs.
  Also build tests and examples with cmake.
- improve AmigaOS support in autotools:
  - configure: detect `CloseSocket()` when it's a macro.
  - configure: fix `IoctlSocket` detection on AmigaOS.
  - curl-amissl.m4: pass AmiSSL libs to tests/servers.
- add AmigaOS3 support to cmake:
  - cmake: fix `HAVE_IOCTLSOCKET_CAMEL` and
    `HAVE_IOCTLSOCKET_CAMEL_FIONBIO` detections.
  - set necessary system libs.
  - add AmiSSL support.
  - inet_ntop, inet_pton: fix using it for AmigaOS. cmake detects them,
    and they did not compile with AmigaOS.
  - cmake: better sync `gethostname` detection with autotools.
    Fixes detection for AmigaOS, where `gethostname` is a macro.
  - cmake: fix `sys/utime.h` detection on AmigaOS.
  - cmake: force-disable `getaddrinfo` for AmigaOS.
  - cmake: tweak threading and static/shared default for AmigaOS.
  - cmake: rely on manual variable `AMIGA` to enable the platform.
- GHA: add AmigaOS cmake and autotools (~45s) jobs.
  Also build tests and examples with cmake.
- INSTALL: update MS-DOS and AmigaOS build instructions.
- amigaos: fix `-Wpointer-sign` and
  `zero or negative size array '_args'` in `Printf()`.
- amigaos: fix `-Wpointer-sign`
- amigaos: fix `-Wredundant-decls` `errno` and `h_errno`.
- amigaos: brute-force silence `lseek()` size warnings.
- amigaos: server/resolve: silence `-Wdiscarded-qualifiers`.
- amigaos: server/resolve: fix `-Wpointer-sign`.
- amigaos: fix `CURL_SA_FAMILY_T` type.
- nonblock: prefer `HAVE_IOCTLSOCKET_CAMEL_FIONBIO` for AmigaOS.
  `ioctl` is also detected, but fails when used. Make the above override
  it for a successful build.
  Authored-by: Darren Banfi
  Fixes #15537
  Closes #15603
- tftpd: prefer `HAVE_IOCTLSOCKET_CAMEL_FIONBIO` for AmigaOS.
- tftpd: tidy-up conditional code.
- curl: set stack size to 16384 for AmigaOS3/4
  Overriding the default 4096.
  Suggested-by: Darren Banfi
  Ref: https://github.com/curl/curl/pull/15543#issuecomment-2498783123
  Ref: https://wiki.amigaos.net/wiki/Controlling_Application_Stack
- functypes.h: fix `SEND_QUAL_ARG2` for AmigaOS.
- tftp: add missing cast in sendto() call for AmigaOS.
- getinfo: fix warning with AmigaOS.
- tool_operate: silence warning with AmigaOS
- amigaos: fix building libtests due to missing `RLIMIT_NOFILE`.
- curl_gethostname: silence warning for AmigaOS.
- ftp: silence `-Wtype-limits` for AmigaOS.
- libtest: fix timeval initialization for AmigaOS.
- examples: fix `timeval` initialization for AmigaOS.
- examples: silence warning for AmigaOS.
- configure: fix IPv6 detection for cross-builds.
- netrc: fix to build with AmigaOS cleanly.
- buildinfo: detect and add `DOS` tag for MS-DOS builds.
- buildinfo: add `AMIGA` to buildinfo.txt in auttools.
- build: move `USE_WATT32` macro definition to cmake/configure.

Non-MS-DOS/AmigeOS-specific tidy-ups:

- configure: sync `sa_family_t` detection with cmake.
- configure: sync `ADDRESS_FAMILY` detection signals with cmake.
- doh: use `CURL_SA_FAMILY_T`.
- lib: drop mingw-specific `CURL_SA_FAMILY_T` workaround.
- cmake: extend instead of override check-specific
  configurations/requirements.
  This allows to honor global requirements added earlier.
  Necessary for AmigaOS for example.
- cmake: omit warning on disabled IPv6 for MS-DOS and AmigaOS.
  No IPv6 support on these platforms. Also sync with autotools.
- lib1960: use libcurl `inet_pton()` wrapper.
- cmake: detect LibreSSL (to match autotools).
- cmake: say the specific OpenSSL flavour detected.
- hostip: add missing `HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID` guard.
- lib: simplify classic mac feature guards.

Follow-up to a8861b6ccd #9764

Closes #15543
2024-12-16 23:20:55 +01:00
Daniel Stenberg
607bec04d9
INSTALL.md: sync with my brag slide "104 operating systems"
Minoca, Nintendo 3DS and Maemo were missing.

Rename OS/400 to IBM I

Closes #15755
2024-12-16 23:09:11 +01:00
Viktor Szakats
39c06f7883
cmake: enable CURL_USE_PKGCONFIG for cross-MINGW
Enable `CURL_USE_PKGCONFIG` by default for MinGW cross-builds.

Note: This may cause fallouts in certain envs where `pkg-config` picks
up native packages.

Follow-up to e1ab01d1bd #14658
Follow-up to c555ab469d #14575

Closes #15005
2024-12-16 22:16:06 +01:00
Viktor Szakats
b9895b9d3f
cmake: namespace functions and macros
Prefix (or suffix) curl-defined macro and function names with `curl`.
To avoid collisions with non-curl CMake and to make them recognizable
as curl-specific calls.

Closes #15498
2024-12-16 21:55:00 +01:00
Viktor Szakats
b4aa93114c
cmake: replace unset(VAR) with set(VAR "") for init
Also add cleanup `unset()`s where missing.

Reported-by: Kai Pastor
Bug: https://github.com/curl/curl/pull/15255#issuecomment-2458659626
Follow-up to 8b09138083 #14610

Closes #15497
2024-12-16 21:12:51 +01:00
Daniel Stenberg
0af5ce162f
variable.md: mention --expand-variable for variables to variables
To assign a variable using contents from another variable.

Closes #15752
2024-12-16 08:17:22 +01:00
Daniel Stenberg
6eb86e428d
ws-docs: remove the outdated texts saying ws support is experimental
It stopped being experimental in 8.10.0

Fixes #15749
Reported-by: Mohammed Sadiq
Closes #15751
2024-12-15 18:14:52 +01:00
Daniel Stenberg
9294ca8916
variable.md: show function use with examples
Closes #15743
2024-12-14 17:00:23 +01:00
Daniel Stenberg
cd80716cb6
docs/BUGS.md: remove leading space from a link 2024-12-14 14:22:38 +01:00
Daniel Stenberg
7347ddc9e2
tool_operate: make --etag-compare always accept a non-existing file
Consider it a blank etag. It allows for more use cases when the file
just might not have been created yet.

Closes #15737
2024-12-13 15:48:27 +01:00
Daniel Stenberg
a300879b63
curl: return error if etag options are used with multiple URLs
And document it.

Add tests 484 and 485

Fixes #15729
Reported-by: Tamir Duberstein
Closes #15731
2024-12-13 10:11:26 +01:00
Daniel Stenberg
c2ac9ea1ee
checksrc: ban use of sscanf()
Using sscanf() is not a (security) problem in itself, but we strongly
discorage using it for parsing input since it is hard to use right, easy
to mess up and often makes for sloppy error checking.

Allow it in examples and tests

Closes #15687
2024-12-13 09:43:05 +01:00
Daniel Stenberg
d5c738c608
strparse: string parsing helper functions
Designed to aid converting off from sscanf parsers. sscanf is hard to
use right, easy to mess up and often makes for sloppy error checking.

The new parsers allow more exact and pedandic parsing.

This new set of functions should be possible to use (and extend) and
switch over other libcurl parser code to use going forward.

Adapts the following to use the new functions:

- altsvc.c
- hsts.c
- http_aws_sigv4.c

Bonus: fewer memory copies, fewer stack buffers.

Test: Unit test1664

Docs: docs/internals/STRPARSE.md

Closes #15692
2024-12-12 16:00:52 +01:00